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No. 6|4,743. Patenten New. 22, |898.E n. M. NEsBlT a. w. cLowEs. WATERHEATER AND SEPRATDB.

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WATER HEATE'B AND SEPARATR.

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Patented Nov. 22, |898. CLOWES.

D. M. NESBIT &. W.

WATER HEATER AND- SEPARATOR.

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UNrrn STATES ATENT Prion.

DAVID MEIN NESBI'I AND VALTER OLOWES, OF LONDON, ENGLAND; SAID OLOVESvASSIGrNOR TO SAID NESBIT.

WATER HEATER AND SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 614,743, dated November22, 1898.

Application filed .Tune 27, 1898.

To a/ZZ whom it' may concern.-

Be it known that we, DAVID MEIN NESBIT and TALTER CLOWES, engineers,residing at 12 Great James street, Bedford Row, London,

IV. O., in the Kingdom of England, subjects of the Queen of GreatBritain and Ireland, have invented certain new and useful Improvementsin Vater Heaters and Separators,

.(for which we have made applications for patro ent in Great Britain,No. 21,020, dated September 13, 1807, and No. 12,007, dated May 26,1898,) of which the following` is a specilication.

This invention relates to improvements in combination feed water heatersand condensers in which exhaust or waste steam is employed to heat thefeed-water supply for boilers or for like purposes, the object of ourinvention being to eject the air from the rezo ceiver and toautomatically regulate the employment of the feed-water for condensingthe steam and for supplying the boiler and to utilize the outer portionof the heaterchamber as a settling-box or baffling-chamber through whichthe steam can flow and deposit some of its impurities before enteringthe boiler.

In the four accompanying sheets of eX- planatory drawings, Figure 1 is avertical lon- 3o gitudinal section through my improved heater andcondenser. Fig. 2 is a sectional plan of the under side of myheater-chamber, showing the eXhaust-steam-inlet chamber and the spargeor condensing spray-pipe in position. Fig. 3 is a sectional plan of theupper portion of my chamber, showing the tubes in section and with theouter jacket or settling-box or casing removed. Fig. 4 is a sectionalplan showing the outer casing or settling-chamber 4o and showing theribs or baffling-blades arranged upon the exterior of the upperwaterchamber and also upon the interior of the surrounding outer casingor jacket of the settling-chamber. Fig. 5 is a lsectional plan 5 showingthe steam and water distributing valve and float arrangements, one floatand valve connection being in section. Fig. 6 is an enlarged sectionalview of the distributing-valves and their connections. Fig. 7 is sel-a1No. 684.620. (No man.)

a diagrammatic View of the complete system, 5o some of the parts beingdisplaced for convenience of illustration.

In carrying our invention into effect we employ a combination vesselhaving an upper cylinder or tube-chamber A, with an annular settlingexternal casing O surrounding it, and having immediately beneath acondensed-wa ter receiver or chamber B. Vithin the upper cylinder wearrange a number of brass or other suitable metal tubes I), one end of6o each tube being secured to the tube-plate E, so as to open into thesteamentrance pocket or chamber F, while the other end of the tubecommunicates through the opposite portion of the tube-plate directlyinto the lower cylinder B. Around the tubes water is allowed tocirculate, entering from the branch G and leaving by the hot-water pipeII3 to feed the boiler or for other purposes where hot water isrequired. Beneath the delivery ends of the 7o tubes in the lower vesselis placed a sparger pipe or pipes M for spraying water onto the issuingsteam should any not be condensed in passing through the tubes. Thesparger-pipes are connected with a water-distributing valve, which isautomatically controlled by the ac tion of a float II, carried withinthe lower vesfa sel B. To remove the air from the chamber and to furtherassist condensation, a steamoperated air-ejector of any suitable form is8o arranged at K, or any ordinary airpump or the like may be employedfor exhausting the air. Within the lower cylinder B are placed twoiloats II II', one iloat, II, being provided for regulating theadmission of steam by means of an equilibrium or other valve L to supplya feed-pump which draws its feed from the lower chamberB and also forregulating the steam for workin g the ej ectors. The other float, II,regulates the supply of condensing 9o water to the sparger or spraypipes M. The i'loat-arms 7i are attached to a spindle N,which passesthrough suitable stuffing-boxes and is connected t0 the stem ofawater-distributing valve O, which determines the quantity of water thatis to be delivered to the spargepipes M, the action of the oat beingsuch that when the level of the water in the lower vessel B falls thefloat movement opens the Vwater-supply valve and an increased quantityof water is delivered to the sparger-pipes to facilitate condensation.At the same time the supply from the steam-distribution Valve Lincreases the action of the air-ejector for the same purpose of greater'condensation; but when the water-level rises the actions of these valvesare reversed, so that steam is admitted to the feed-pump to reduce thewater-level in the receiver, While the ejector and spraying devices arepartially or entirely stopped for the time.

The valve L is representative of any suitable form of valve which willperform a twofold function-z'. e., of passing steam to the feed-pumpwhen the float rises and of shutting this off and passing steam to theairejector when the float falls.

To remove the impurities from the exhauststeam, we pass it from theengine or other exhaust into a settling-chamber or separator C. lVithinthis chamber we arrange a series of vanes, ribs, or battlingdivision-plates I), which prevent a free passage being formed for thesteam from its inlet branch R to its outlet branch S. (See Fig. 7.) Thusthe steam is caused to pass by a tortuous path and to meet severalsurfaces of material I), against which may be deposited the impurities,grease and the like, which may be held in solution or carried by thesteam. From the outlet S the steam passes to the entran ce-pocket F,Fig. 7. Suitable cleaning-out doors T are provided upon the casing, anda grease-collecting or Vscum pipe U is arranged within thesettlingchamber, as shown in Fig. l, this pipe also serving to allow thecondensed steam to escape when a certain predetermined level has beenreached.

To keep the impurities from the first receiver or lower Well B', agrid-plate B2 is employed, or any ordinary filtering media may be placedin position above the drawing-off well B when so desired. Mud-holes orcleaning-doors b are arranged upon the lower chamber. Instead of passingthe steam through the outer jacket, for special conditions We maysometimes pass the water from the feed-pump through the jacket before itenters the boiler.

The connections and arrangements of pipes between the water-distributionvalve, Ithe spraying-pipes, cold and hot water supply, also between thesteam-valve and the pump and ejector, may be varied to suit anyparticular requirement without departing from the features of ourinvention.

Having now described our invention, what We claim as new, and desire tosecure by Letters Patent, is-

1. In combination, chamber A having condensing-pipe D therein, the inletand outlet from the chamber A for the cooling-water, the chamber B forthe Water of condensation and into which the pipes D discharge, thespray-pipe located Within chamber B across the outlets of the pipes Dfor condensing the steam issuing-therefrom, a water-valve forcontrolling the supply to the spray-pipe, a steam-Valve controlling afeed-pump, and ioats in the chamber for opening the steamvalve when thecondensation-Water rises in the chamber and for opening the water-valve,when the Water falls, to supply the spraypipe, substantially asdescribed.

2. In combination, the chamber A, the condensing-pipes D therein, saidchamber having the inlet and the outlet for the cooling- Water, thechamber B for the water of condensation and into which the pipes Ddischarge, the spray-pipe in the chamber B across the outlets of thepipes D, the airejector connected to the chamber B, a water- Valve forcontrolling the spray, a fioat in the chamber B controlling said valve,a steamvalve controlling the air-ejector in one position and a feed-pumpin another position, and a lioat in the chamber for controlling theposition of the steam-valve, substantially as described.

3. In combination, the chamber A having condensing-pipes D therein, thecondensation-chamber into which the pipes D discharge, thesettling-chamber C surrounding the chamber A, the inlet for the steam tosaid chamber, the entrance-pocket F for the pipes D and the connectionfrom the chamber C to the entrance-pocket F, substantially as described.

In Witness whereof we have hereunto set our hands in presence of twowitnesses.'

DAVID MEIN NESBIT. lVALTER CLOWES.

Vitnesses to the signature of David Mein Nesbit:

ALBERT E. PARKER, RoDoLrHE J. CLEARY.

lVitnesses to the signature otlValter Clowes:

WM. GILHESPY, A. B. GoLDsnRoUcn.

IOO

